ISRO Technician-B MRAC Question Paper - 2017 (Set -1) with Answer Key

ISRO Technician-B MRAC Question Paper - 2017 (Set -1) with Answer Key

61) A refrigerant with highest critical pressure is

Answer is:

Freon-22

62) Approach of cooling tower means

Answer is:

difference in temperature of the cold water leaving the cooling tower and the wet bulb temperature of surrounding air

63) A power element in thermostatic expansion valve having the same refrigerant charged as the refrigeration system is called

Answer is:

Straight charged valve

64) Cooling effected by using secondary refrigerants is called

Answer is:

Indirect system

65) Leakage in the refrigeration system using ammonia as refrigerant detected by

Answer is:

Sulphur sticks

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